Frequently asked questions

Yes, Groupe Altia holds a valid RBQ licence number. You can verify our accreditation directly on the Régie du bâtiment du Québec website.

Absolutely. We carry full liability insurance covering all of our work. Proof of insurance is available upon request before the project begins.

We primarily serve Montreal, the South Shore and North Shore, and surrounding cities. Check our service area map or contact us to confirm your location.

In 5 simple steps: (1) You contact us or fill out the online form. (2) We perform a free on-site visit. (3) We provide a detailed quote within 24 hours. (4) You choose your materials and we set the date. (5) Our team completes the work cleanly, on schedule.

We contact you within 24 hours of your online request to schedule an estimation visit.

Generally within 1 to 3 weeks depending on the time of year and our schedule. We confirm the exact date when we deliver the quote.

For a standard residential yard, sod installation takes one day. Interlock paving, depending on the area, can take 1 to 3 days. A full project (excavation + sod + paving) can span 2 to 5 days.

We mainly use Kentucky Bluegrass and Ryegrass depending on your needs. Kentucky Bluegrass is more resistant to Quebec winters, while Ryegrass recovers faster after stress. We recommend the right type based on your yard, sunlight and usage.

Yes, watering is crucial for the first 2–3 weeks. We provide a detailed watering guide at delivery. Generally: 20–30 minutes morning and evening for 2 weeks, then gradually less.

Wait until the grass reaches 8–10 cm in height, usually 3–4 weeks after installation. Avoid cutting more than one-third of the height on the first mow.

Yes, we guarantee sod establishment for 3 weeks following installation, in case of any issue related to our work (excluding watering errors by the homeowner).

Both are excellent Quebec-based manufacturers. Techo-Bloc offers a wider aesthetic range with premium products. Permacon is known for its durability and value for money. We can advise you based on your budget and desired style.

Properly installed paving withstands Quebec's freeze-thaw cycles. The key is adequate excavation (at least 12 inches of compacted base) and good drainage. That is precisely our specialty. Our 1-year stability guarantee is proof of that.

Wash with soap and water in the spring. For oil stains, use a commercial degreaser. Once clean, apply a paver sealant every 2–3 years to protect the colour and make future maintenance easier.

The price varies depending on the area, site accessibility and the preparation work required. We offer free, detailed quotes. Contact us for a personalized estimate.

Yes, we generally require a deposit of 30–50% upon signing the contract, with the balance due at the end of the project after your final inspection.